Lighting systems with heat extracting light emitting elements
US9062854B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 2014 |
| Grant date | Jun 23, 2015 |
| Priority date | — |
| Expiry date | Apr 21, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8512
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lighting systems with heat extracting light emitting elements are disclosed based on the light emitting surface also functioning as the heat cooling surface. Lighting systems which have only their light emitting surfaces exposed to ambient are disclosed. A thermally conductive mostly reflective light transmitting element provides light diffusion, interconnect, and forms a light recycling cavity providing very low profile and lightweight solid state light sources. These properties make these light sources very useful in applications such as aircraft, rescue, temporary illumination, and automotive where weight directly impacts cost and utility. The integration of drivers and other electrical functions onto the heat extracting light emitting elements is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.